[ SUBSTITUTION DRILLS ]
1. What are ( these / those )? Are they yours?
2. Yes, they are. Those ( books / notebooks / pencils / pens / briefcase ) are mine.
3. Whose pens are those? My pens are ( here / over here/ there / over there ).
4. Those aren&`&t ( your / my / his / her ) books, are they?
5. These books are yours. Where are ( mine / his / hers / ours / theirs )? .
6. Here are ( two / three / four / five ) pencils. Whose pencil are these?
7. This isn&`&t my ( briefcase / pen / pencil / notebook / paper / ), and those aren&`&t my books. Whose are they?
8. ( Your / My / Our / His / Her / ) books are over here, and their books are over there.
9. I see the table, but where are the ( dictionaries / books / pencils / notebooks )?
10. I see ( five / six / seven / eight / nine / ten ) books. These aren&`&t my books. Whose are they?
11. Here&`&s a chair. Please come in and sit down. Your ( books / pencils / pens / things ) are here.
12. Here are books, pencils and ( pens / papers / notebooks / lessons ). Whose things are these?
13. These things aren&`&t hers. They&`&re ( mine / ours / yours / theirs / his ), aren&`&t they?
14. Good morning, Bill. Here&`&s your ( chair / table / desk ) over here. Let&`&s begin.
15. It&`&s time to begin Lesson Four now. Do you understand the ( book / lesson / page / sentence / word )?
16. This is page ( ten 10 / eleven 11 / twelve 12 / thirteen 13 / fourteen 14 / fifteen 15 ). Do you understand the lesson?
17. ( What / Whose / Where ) are these?
18. These are my ( notebooks / pens / pencils / books ). Where are yours?
19. ( Here / there ) are my things.
20. I see ( yours / his / theirs ) over there.
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